Genetics: Analysis and Principles
5th Edition
ISBN: 9780073525341
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 25, Problem 18CONQ
Explain how loss-of-function mutations in the following categories of genes would affect the morphologies of Drosophila larvae:
A. Gap genes
B. Pair-rule genes
C. Segment-polarity genes
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provide one example from the Drosophila AP toolkit for "Toolkit genes can be classified according to the phenotypes caused by their mutation. Similar mutant phenotypes often reflect genes that function in a single developmental pathway. Distinct pathways exist for the generation of body axes, for example, and for the formation and identity of fields."
Name three possible factors contributing to early asymmetries in a developing embryo (i.e. what are the kinds of things early on that lead to the development of the body axes - dn, a/p, l/r, etc)?
In the fruit fly drosophila melanogaster, the anterior-to-posterior body axis becomes segmented into distinct regions. explain the role of the genes bicoid and nanos in this process.
Here are schematic diagrams of mutant Drosophila larvae.
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Chapter 25 Solutions
Genetics: Analysis and Principles
Ch. 25.1 - Prob. 1COMQCh. 25.1 - Prob. 2COMQCh. 25.1 - Which of the following is the correct order for...Ch. 25.2 - Prob. 1COMQCh. 25.2 - Prob. 2COMQCh. 25.2 - Prob. 3COMQCh. 25.2 - Prob. 4COMQCh. 25.3 - Prob. 1COMQCh. 25.3 - Prob. 2COMQCh. 25.3 - 3. Myogenic bHLH proteins are ___________ that...
Ch. 25.4 - Prob. 1COMQCh. 25.4 - Prob. 2COMQCh. 25.5 - 1. A key event that initially determines female or...Ch. 25.5 - Prob. 2COMQCh. 25 - 1. What four types of cellular processes must...Ch. 25 - Prob. 2CONQCh. 25 - Prob. 3CONQCh. 25 - 4. Which of the following statement(s) is/are true...Ch. 25 - Discuss the morphological differences between the...Ch. 25 - Prob. 6CONQCh. 25 - Explain what a morphogen is, and describe how it...Ch. 25 - 8. What is positional information? Discuss three...Ch. 25 - Prob. 9CONQCh. 25 - Prob. 10CONQCh. 25 - 11. Describe the function of the Bicoid protein....Ch. 25 - With regard to development, what are the roles of...Ch. 25 - Discuss the role of homeotic genes in development....Ch. 25 - Describe the molecular features of the homeobox...Ch. 25 - What would you predict to be the phenotype of...Ch. 25 - Prob. 16CONQCh. 25 - If a mutation in a homeotic gene produced the...Ch. 25 - 18. Explain how loss-of-function mutations in the...Ch. 25 - What is the difference between a maternal-effect...Ch. 25 - Prob. 20CONQCh. 25 - Prob. 21CONQCh. 25 - Prob. 22CONQCh. 25 - 23. Discuss the similarities and differences...Ch. 25 - 24. What is cell differentiation? Discuss the role...Ch. 25 - Prob. 25CONQCh. 25 - What is a totipotent cell? In each of the...Ch. 25 - 27. What is a meristem? Explain the role of...Ch. 25 - Prob. 28CONQCh. 25 - Predict the phenotypic consequences of each of the...Ch. 25 - 30. Explain how alternative splicing affects sex...Ch. 25 - Prob. 1EQCh. 25 - Compare and contrast the experimental advantages...Ch. 25 - 3. What is meant by the term cell fate? What is a...Ch. 25 - 4. Explain why a cell lineage diagram is necessary...Ch. 25 - Explain the rationale behind the use of the bag of...Ch. 25 - Prob. 6EQCh. 25 - Take a look at question 2 in More Genetic TIPS...Ch. 25 - All of the homeotic genes inDrosophilahave been...Ch. 25 - Prob. 9EQCh. 25 - wo techniques commonly used to study the...Ch. 25 - Prob. 11EQCh. 25 - Prob. 12EQCh. 25 - 13. Another way to study the role of proteins...Ch. 25 - 14. Why have geneticists used reverse genetics to...Ch. 25 - Prob. 1QSDCCh. 25 - Prob. 2QSDCCh. 25 - Prob. 3QSDC
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